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test_client_resource.py

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  • customize-monitoring.nix 1.84 KiB
    # Define a function which returns a value which fills in all the holes left by
    # ``monitoring.nix``.
    {
      # A set mapping VPN IP addresses as strings to lists of hostnames as
      # strings.  The system's ``/etc/hosts`` will be populated with this
      # information.  Apart from helping with normal forward resolution, this
      # *also* gives us reverse resolution from the VPN IPs to hostnames which
      # allows Grafana to show us hostnames instead of VPN IP addresses.
      hostsMap
    
      # See ``customize-issuer.nix``.
    , publicKeyPath
    , privateKeyPath
    , monitoringvpnIPv4
    , domain
    
      # A list of VPN IP addresses as strings indicating which clients will be
      # allowed onto the VPN.
    , vpnClientIPs
    
      # A list of VPN clients (IP addresses or hostnames) as strings indicating
      # which nodes to scrape "nodeExporter" metrics from.
    , nodeExporterTargets
    
      # A list of VPN clients (IP addresses or hostnames) as strings indicating
      # which nodes to scrape "nginxExporter" metrics from.
    , nginxExporterTargets ? []
    
      # A string giving the NixOS state version for the system.
    , stateVersion
    , ...
    }:
    { config, ... }: {
      # See customize-issuer.nix for an explanatoin of targetHost value.
      deployment.targetHost = "${config.networking.hostName}.${config.networking.domain}";
    
      deployment.secrets = {
        "monitoringvpn-private-key".source = "${privateKeyPath}/monitoringvpn/server.key";
        "monitoringvpn-preshared-key".source = "${privateKeyPath}/monitoringvpn/preshared.key";
      };
    
      networking.domain = domain;
      networking.hosts = hostsMap;
    
      services.private-storage.monitoring.vpn.server = {
        enable = true;
        ip = monitoringvpnIPv4;
        inherit vpnClientIPs;
        pubKeysPath = "${publicKeyPath}/monitoringvpn";
      };
    
      services.private-storage.monitoring.prometheus = {
        inherit nodeExporterTargets;
        inherit nginxExporterTargets;
      };
    
      system.stateVersion = stateVersion;
    }